Pasting and folding machine for box-blanks.



^ No. 7I5,620. Y Patenfed Dec. 9, |902. I

E. 6. STAUDE.4l

PASTING AND FOLDING MACHINE FOB BOX BLANKS.-

(APplicltion Med In'. 2li. 1962.) um man.) '25min-4MM);

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Patented nec. 9, |902. E. STAUDE. APASTING'AND FOLDING MACHINE FUR BOXBLANKS. Appimcion med mr. 25, 1902.)

2 Sheeis-Sheet 2.

(No Mndel.)

UNITED STATES PATENT OFFICE.

EDVIN G.' STAUDE, OF MINNEAPOLIS, MINNESOTA.

PASTING AND FOLDING MACHINE FOR BOX-BLANKS.

SPECIFICATION forming part of Letters Patent No. 715,620, dated December9, 1902.

i Application filed March 25, 1902.. Serial No. 99,846. (No model.)

T0 a/ZZ whom, it' may concern:

Be it known that I, EDWIN G. STAUDE, of Minneapolis, Hennepin county,Minnesota, have invented certain new and useful Improvernents in Pastingand Folding Machines for Box-Blanks, of which the following is aspecification.

The invention relates to machines for making paper or pasteboard boxesadapted par.

ticnlarly for containing cereal foods.

The object of the invention is to provide a machine wherein very thinand cheap brittle paper can be cut, pasted, and folded with neatness anddespatch, which cannot ordinarily be done in pasting-machines as nowconstructed, owing to the fact that the paper is too thin to be pushedalong by the traveling belts and their lugs or is not sufficientlytenacious to permit the partially-severed blanks to be dragged throughthe several steps of pasting and folding.

Other objects of the invention will appear from the following detaileddescription.

' inafter described, and particularly pointed out in the claims.

In the accompanying drawings, forming part of this specification, Figure1 is a plan view ofa box-making machine embodying my invention. Fig. 2is a longitudinal section of the same. Fig. 3 is a perspective view ofthe cutting, pasting, and folding devices removed from thesupporting-frame and in section. Fig. 4 is a transversev section showingthe position of the folding'devices with respect to the rotating guidesor the presserrolls; and Fig. 5 is a detail view of a modification,showing two sets or series of rolls between which the blanks are fed. l

In the drawings, 2 represents a suitable frame having bearing-blocks 3at one end` for the upper and lower cutting-rolls -1 and 5, the

former being adjustable toward or from the latter by means Vof theset-screws 6. The

shafts for said rolls project beyond their bearings on each side of themachine, and the upper roll is provided with a gear 7, meshing with asimilargear on the shaft of the lower roll, and on the' opposite end ofthe lower roll I provide a sprocket' 9,-connectedwith a smaller sprocket10 on a shaft 11 near the opposite end of the machine. The shaft 11carries a roll 12, and a similar roll 18 is provided near thecutting-rolls, and upon said rolls 12 and 13 I arrange an endlessconveyer-belt 14,

that is adapted to travel over a flat table or bed 15, provided on saidframe and extendinglengthwise thereof. The cutting-rolls are provided intheir peripheries with the usual scoring means (not shown) andtransverse knives 1o, which score and cut the blanks where they are tobe folded, and longitudinal knives 17 to sever the blanks one fromanother as the sheet passes between the rolls.

Upon thetable 15 near the cutting-rolls I provide an arched frame orbracket 18, providednear its ends with vertically-slidable rods 19, thatare adjusted by means of nuts 20, and are provided beneath said bracketwith springs 21, which engage the under side of the bracket andhorizontal bars'22, carried by said rods, and normally hold said barsa'nd rods in ltheir depressed position. The bars 22 run parallel withthe conveyer-belt and table and are provided with a series ofidle-wheels 23, between which and the con- Veyer-belt the box-blanks arefed from the cutting-rolls and by which said blanks are held in aflatwise carrying position upon said belt. A paste-reservoir 24 isprovided on one side of said table, and achain 25, operating over wheels26 and 27, lifts the paste to the surface of ythe table, and as theedges of the blanks pass between the wheel 27 and the paster wheelordevice 28 a sufficient quantity of paste is smeared along the edge ofthe blank to securethe overlapping edges together when the blanks arefolded. This paste-reservoir device has been described in detail in myprevious pending application, -and hence needs no further illustrationor description herein. Near the middle jof the table I provide a secondbracket 29, corresponding to the one described, except that it isprovided with a single wheel-supporting bar 30, arranged, preferably,along the central line of the table and carrying a series of wheelscorresponding to those heretofore de- IOO scribed and adapted to engagethe blanks near the middle line thereof. These wheels serve to hold downthe middle of the blank while the sides are being raised by the actionof the folders, the first set of wheels, heretofore described, beingdesigned to hold both sides of the blanks on the belt while the edgesare being smeared with paste and when the sides of the blanks are firstengaged by the folder-arms.

Near the discharge end of the machine I provide a third bracket 31,carrying two parallel bars 32 near its ends and the edges of the belt,said bars being supported in a manner corresponding to those heretoforedescribed and carrying a series of idle wheels which serve to engage thesides of the blank after they have been folded and turned in over themiddle portion and press them down to bring the edge that is smearedwith paste into contact with the one that it overlaps. During thepassage of the blanks over the table they are held between the idlewheels and the belt and carried rapidly along through the steps ofpasting and folding. The blanks will be entirely severed one from theother, and being held down upon the belt and table by theyieldingly-carried wheels above will be prevented from twisting orcurling or becoming bent or broken through their extremely ilexible orbrittle character.

The folding means which I prefer to employ in connection with thismachine consists of arms 33, that are secured to the bracket 3l andextend back beneath the other brackets in position to engage the blanksas they leave the cutting-rolls. The receiving ends of the folders lieclose to the table to pass beneath the approaching ends of the blanks,and the folders are then gradually curved upward and inward to a pointabove the middle portion of the carrier-belt. Until reaching a pointnear the discharge end of the bar 30 the folders run substantiallyparallel with each other to their points of connection on the bracket3l. The various curves and bends in these folderarms serve to make thenecessary folds in the blanks to produce the complete box.

In Fig. 3 the sides of the box are represented as being turned up to avertical position by the folder-arms, While in Fig. 4 the sides areshown vertical and about to be turned over one upon the other. Near thedischarge side of the machine I provide shafts 34, provided with gears35, driven from similar gears 36 on a shaft 37, and said shafts 34 areprovided with spiral conveyers 38, that engage the edges of the blanksas they are discharged from between the conveyer-belt and wheels andadvance them on edge Within a conveyer box or casing 39, where they arepacked ready for use.

In Fig. 5 Ihave shown a construction wherein the conveyer-belt isdispensed With, and I have provided two sets or series of Wheels orrolls 40 and 4l, between which the blanks are fed and advanced. Eitherone or both sets of these wheels are driven by suitable means. Thesewheels will serve to advance the blanks quite as rapidly as themechanism heretofore described and in some cases may be preferable tothe conveyer-belt. I do not wish to confine myself, however, to theparticular adaptation shown of the Wheel or roll feeding means, as thesame is capable of various modifications, the essential feature of theinvention being the means for advancing the blanks that is adapted toreceive either those of very thin and iiexible or cheap brittle materialor that which is comparatively sti in character and advancing the samethrough the successive steps of forming the box with equal facility.

I claim as my inventionl. The combination, with the cutting and scoringrolls, of an endless carrier-belt whereon the cut and scored blanks aredelivered, curved folder-arms provided above said belt, the intermediateor middle portions of said arms being inwardly curved toward the middleof said belt and adapted to fold the raised sides of the blanks in overthe middle p0rtions thereof, means near the receiving ends of saidfolders for holding the blanks upon said belt during the operation ofraising and turning in their edges, a pasting device, and idle wheelsprovided above the middle of said belt between the inwardly-curvedsections of said folders to press the blanks down upon said belt, andsaid wheels extending to a point opposite the termination of saidinwardly-curved sections to insure the rapid continuous feed of theblanks while their sides are being folded.

2. In a pasting and folding machine for boxblanks, the combination withan endless carrier-belt Whereon the cut and scored blanks are delivered,of folder-arms provided above said belt and adapted to engage and raisethe edges of the blanks and provided with inwardly-curved sections,means near the receiving ends of said folders for pressing the blanksdown upon said belt while their edges are being raised, a pastingdevice, idle Wheels provided between the inwardly-curved sections ofsaid folders and adapted to press the middle portions of the blanks downupon said belt while their sides are being folded thereover, said wheelsextending to a point opposite the termination of said inwardly-curvedsections, and idle wheels provided near the edges of said belt upon eachside of the discharge ends of said folders to receive the folded blanksbefore they are discharged from beneath said first-named wheels, Wherebythe progress of said blanks during the folding operation will be rapidand continnous.

3.` The combination, with the cutting and scoring rolls, of an endlesscarrier-belt Whereon the cut and scored blanks are delivered, wheelssupported above said belt at the edges thereof and adapted to bear uponsaid blanks between and near the longitudinal scored IOO IIO

lines therein, curved folder-arms provided above said belt, thereceiving ends of said arms being outside and near said belt and wheelsand adapted to engage the edges and raise the sidesof the blanks whilethe middle or intermediate portions thereof are held upon the belt bysaid wheels, a device for pasting one edge of the blank provided nearthe receiving en d of one of said folders, the intermediate or middleportions of said folders being inwardly curved toward the middle of saidbelt and adapted to fold the raised sides of the blanks in over themiddle p0rtions thereof, means provided above said belt between the inwardly-turned portions of said folders to hold the middle portions ofthe blanks fiatwise upon said belt while their sides are being foldedthereover, said means extending to a point opposite the termination ofthe inwardly-curved portion of said folders, whereby the rapidcontinuous feed of the blanks while their sides are being folded isinsured.

4. The combination, with the cutting and scoring rolls, of an endlesscarrier-belt whereou the cut and scored blanks are delivered, wheelssupported above said belt and adapted to bear-upon said blanks betweenand near the longitudinal scored lines therein, folderarms providedabove said belt, the receiving ends of said arms being outside and nearsaid wheels and adapted to engage the edges and raise the sides of theblanks while the middle or intermediate portions thereof are held uponthe belt by said Wheels, means for pasting one edge of the blankprovided near the receiving end of one of said folders, the intermediateor middle portions of said folders being inwardly turned toward themiddle .of said belt and adapted to fold the raised sides of the blanksin over the middle portions thereof, holding and feeding means providedabove said belt between the inwardly-turned portions of said folders topress the middle portions of the blanks i'latwise upon said belt Whiletheir sides are being folded thereover, and Wheels provided above saidbelt upon each side of the discharge ends of said folders to bear uponthe blanks and press their pasted edges together, said wheels engagingthe blanks before they pass out of contact with said holding and feedingmeans whereby the progress of the blanks will be rapid and continuous.

5. ln a pasting and folding machine foi-boxblanks, the combination, withthe cutting and scoring rolls, of an endless carrier-belt Whereon thecut and scored blanks are delivered, a table over which said beltoperates, a bracket 18 provided on said table over said belt, bars 22supported by said bracket near the edges of said belt, and substantiallyparallel therewith, a series of wheels carried by said bars and adaptedto bear upon said blanks between the longitudinal scored lines therein,folder-arms provided above said belt, the receiving ends of saidarms'being out- .side and near said Wheels and adapted to engage theedges and raise the sides of the blanks while the middle or intermediateportions thereof are held down upon the belt by said wheels, a pastingdevice nearthe receiving end of one of said folders and adapted to pasteor gum one edge of the blanks, the intermediate or middle portions ofsaid folders being inwardly turned over said belt and adapted to foldthe raised sides ofthe blanks in over the middle portions thereof, asecond bracket 29, a bar supported thereon and centrally with respect tosaid belt, a series of wheels carried by said bar and adapted to engageand hold the middle portions of the blanks datwise upon said belt Whiletheir sides. are being folded thereover and said folders near theirdischarge ends being close to said belt aud adapted to press the foldedsides and edges down upon the middle por'- tions of the blanks andcomplete the folding operation.

6. In a pasting and folding machine for boxblanks, the combination, withthe cutting and scoring rolls, of an endless carrier-belt Whereon thecut and scored blanks are delivered, means supported above said`belt andadapted to bear upon said blanks between the longitudinal scored linestherein, folder-arms supported above said belt and having theirreceiving ends in position to engage and raise the edges of the blankswhile the middle or intermediate portions thereof are held upon the beltby said bearing means, means provided near the receiving end of one ofsaid folders for pasting an edge of the blank, the intermediate ormiddle portions of said folders being inwardly turned toward the middleof the belt and adapted to fold the raised edges of the blanks in overthe middle portions ihereof, spring-pressed idle wheels provided abovesaid belt between the inwardlyturned portions of said folders to holdthe middle portions of the blanks flatwise upon said belt while theiredges are being folded thereover, the discharge ends of said foldersbeing close to the belt and adapted to complete the folding operation,and springpressed idle wheels provided above said belt upon each side ofthe discharge ends of said folders to bear upon the blanks and presstheir pasted edges together, substantially as described;

7. ln a pasting and folding machine for boxblanks, the combination, witha suitable table, of an endless carrier-belt operating over the same andwhereon the cut and scored blanks are delivered, a pasting device, abracket provided on said table, wheels supported by said bracket andadapted to bear upon the middle portions of the blanks, folder-armsinwardly turned toward the middle of the belt and adapted to fold theupwardly-turned sides of the blanks in over the middle port-ionsthereof, said folder-arms being substantially parallel at theirdischarge end and adaptedgto turn down the folded sides IOO IIO

of the blanks and com plete the folding operation, a bracket provided onsaid table near its discharge end, and Wheels carried by said.

last-named bracket upon each side of said folder-arms and adapted toengage the blanks before they are discharged from under said first-namedWheels and to press together the folded and pasted edges of the blanks.

8. The combination, with a suitable oonveyer, of folder-arms arrangedabove the same and provided with inwardly-curved sections, and meansprovided above said conveyer between said inwardly-curved sections tohold the blanks down upon said conveyer and said holding means extendingto a point opposite the termination of said inwardlycurved sections toinsure the rapid continuous feed of the blanks while their sides arebeing folded.

9. The combination, with a suitable conveyer, of folding means arrangedabove the same and converging from their receiving toward theirdischarge ends, means provided above the middle of said conveyor betweensaid folding means to bold the blanks down upon said conveyer, andmeansnear the said conveyer upon each side of the discharge ends of saidfolding means in position to receive the folded blanks before they aredischarged from beneath said holding meansfwhereby 3o the progress ofsaid blanks during the folding operation Will be rapid and continuous.

l0. The combination, with the cutting and scoring rolls, of acarrier-belt Whereon the cnt and scored blanks are delivered, folderarmsprovided above said belt, the intermediate or middle portions of saidarms being inwardly curved toward the middle of said belt and adapted tofold the raised sides of the blanks in over the middle portions thereof,means near the receiving ends of said folders for holding the blanksupon said belt during the operation of raising and turning in theiredges, a pasting device, and means provided above the middle of saidbelt between the inwardly-curved sections of said folders to hold theblanks down upon said belt, and said holding means extending to a pointopposite the termination of said inwardlycurved sections to insure therapid continuous feed of the blanks While their sides are being folded.

In Witness whereof I have hereunto set my hand this 22d day of March,1902.

EDWIN G. STAUDE. In presence of-v RICHARD PAUL, M. C. NOONAN.

